Safety-lamp.



W. E. PUGH.

Patented Mar. 30, 1915.

WITNESSES:

A 7TOR/VEY THE NORRIS PEr=K nu, PHUlL/d-l '10., WASHINGTON. D C.

OFFIG.

WILLIAM E. PUGH, OF SEATTLE, WASHINGTON.

SAFETY-LAMP.

Specification of Letters Patent.

Patented Mar. 30, 1915.

Application filed June 23, 1914. Serial No. 846,741.

To all whom it may concern Be it known that 1, WILLIAM E. PUGH, citizen of the United States, residing at Seattle, in the county of King and State of Washington, have invented a certain new and useful Improvement in Safety-Lamps, of which the following is a specification.

My invention relates to improvements in safety oil burning lamps which are adapted automatically to extinguish their flames upon being tipped over, and the object of my improvement is to provide a lamp of a simple form of construction which shall be adapted to extinguish its flame automatically if it be accidentally upset or tipped over to a dangerous degree, or if it be inclined purposely to extinguish its flame, and which shall be provided with a base so formed as will tend to cause such lamp, when accidentally knocked over, always to tip and move through a plane that is at right angles to the plane of its wick-tube whereby the extinguishing devices associated with such wick-tube may be more reliable in their operation. I accomplish this object by devices illustrated in the accompanying drawings in which- Figure 1 is a view partly in elevation and partly in vertical mid-section of parts of a burner embodied in my invention; Fig. 2 is a view in elevation of parts of the same burner in a tipped-over position better to show the operation of its working parts; Fig. 3 is a plan view of a lamp embodying my invention; and Figs. 4 and 5 are views in perspective of details of my invention.

Referring to the drawings, throughout which like reference numerals indicate like parts, 6 is the base portion of a burner which is provided with a downwardly projected screw-threaded portion 7 to adapt it to be screwed into the top portion of an oil burning lamp, in a well known manner, a wick-tube 8 is fixed to the base portion 6 to extend upwardly through the central portion thereof and within such wick-tube 8 is disposed an oil lamp-wick 9 whose upper end terminates at the top of said wicktube 8 while its lower end may project downwardly into the oil well of a lamp.

The upper end portion of the wick-tube 8 has its wall flared outwardly to recede from the side surfaces of the wick and its flaring sides are perforated with a plurality of holes 10, as more clearly shown in Fig. 5, through which air may pass thus to permit combustion even though the wick may not project above the surface of the top edges of said wick-tube 8. Obviously, slots or notches cut in the edges of such flared portion of said wick-tube 8 may serve as a substitute for the holes 10.

On opposite sides of the flared portion of the wick-tube 8, and adjacent to the upper edges thereof, are disposed extinguishing plates 11 and 12, respectively, which are independently articulated with such flared .portions of said wick-tube 8 by pivots 13 and 14, normally to assume a vertical position, aS shown in Fig. 1, by reason of their lower end portions being weighted by weights 15 and 16, respectively.

Each of the plates 11 and 12 above their respective pivots 18 and 14 extend upwardly for a suitable distance to adapt them to cover and close the flared top of the wicktube 8 if the burner be tipped to lean sidewise, as shown in Fig. 2, wherein the weight 15 acts to maintain the plate 11 in a vertical position while the wick-tube 8 is tipped to an angle that causes its flared end to engage with and be covered by the inner surface of the upper end portion of said plate 11.

Manifestly, if the burner be tipped to lean in a direction opposite to that shown in Fig. 2 then the plate 12 would in a like manner respond to the action of its weight 16 to cover the flared end of the wick-tube 8. Of course, the plates 11 and 12 each may be constructed to have its respective weight 15 and 16 to be integral therewith.

Each of the plates 11 and 12 is provided with a plurality of perforations 17, disposed along a line adjacent to and just above its pivots, through which perforations air may gain access to the space between the inner surface of the plate and the flame, under normal conditions while the lamp is burning, whereby the flame may be prevented from hugging and unduly heat ing such plate.

In Fig. 4 I have shown more clearly, by perspective view of the plate 11, the position of the perforations 17 and the pivot socldzlet through which the pivot 13 may exten As shown more clearly in Fig. 1, I have provided a well known form of an inclosing dome 18 whose lower edge is secured to a flange 19 of the base portion 6 while the central portion of the top of such dome 18 is provided with an oblong opening 20 through which a flame may issue from the wick 9. I have also provided a well known form of lamp chimney supports 21 which are attached to said base portion 6 to extend upwardly therefrom to hold a lamp chimney, not shown.

In Fig. 8 I have shown by plan View on a reduced scale the form of the bottom bearing surface of the base 22 of a lamp embodying my invention, which bearing surface is of oval or elliptical form and whose major axis is disposed to be parallel with the plane of the wick-tube 8 whereby if the lamp be upset it will tend to tip over in a direction that is parallel with the minor axis of such bottom bearing'surface, thus to make positive the action of one or the other of the plates 11 and 12 in the operation ofcovering automatically the flared end of the wick-tube 8 in response to the action of the respective one of the weights 15 and 16.

To'operate a lamp embodying my invention the well of the lamp is filled with oil andthe burner is screwed into the top of the lamp to secure it thereon in a position so that the major axis of the bottom bearing surface o'fthe' base of the lamp will be parallel with the plane of the lamp wick 9, which position may be determined by a proper relation of the screw-threads of the screw-threaded portion 7 of the burner and the sorewthreads in the opening of the lamp well (not shown), whereupon the lamp wick 9' extending upwardly through the wick-tube 8 will become saturated'wi'th oil, then such wick 9 is adjusted by moving it vertically (by well known means not shown, as by a spur-wheel suitably mounted on a shaft and disposed to engage with the side of the wick 9) to project its upper end from the flaring end of the wick-tube 8 whereupon the wick 9 is ignited and then the wick 9 is lowered to give a desired size of flame and'in such position the end sur face of the wick 9 will nearly' register with the top surface of the flared end of the wick-tube 8. After the wick 9 is thus ignited and adjusted a chimney (not shown) is disposed to be supported by chimney supports 21. Air for the purpose of combustion passes upwardly through perforations 23 in the base portion6 of the burner, portions of which air may find access to the point of combi'istion through the per-* forations 10- in the flared end of wick-tubel Sand through perforations 17 in the plates E 11 and 12 whereby the fiame'may be directed through the oblong opening 2O in the dome 18 without unduly heating the plates 11 and 12, and whereby combustion maybe maintained though the upper end of the wick 9 be even with or slightly lower than the top edge of the wick-tube 8. hen the lamp is thus burning, if it be upset accidentally to tip over then by reason of the oval 'form of the bottom bearing" surface-of-the base 22 it will tend always to'ti'p in a dire'ction that will facilitate the action of one or the other of the weighted plates 11 and 12, as illustrated in Fig. 2, whereby" the flame will be extinguished in an obvious manner.

Obviously the form and proportion of the different parts of a lampembodying my inventionmay be changed as desired, as for instance, the inclosing dome 18 may be of any size and form that will permit the free operation of extinguishing plates, like the plates 11 and 12, and such plates 11 and 12 may be of any form and any dimensions that will adapt them to fulfill their funced at their lower ends and having struckout portions intermediate their ends with the struck-out portion of each plate rolled to provide a pivot and positioned in alinement with the tube pivots, and pintles' in serted in the al-ined rolled portions for pivotally' mounting the extinguisher plates on the tube.

In witness whereof I hereunto subscribe my name this tenth day of June, A. D. 19%.

WILLIAM E. PUGH.

lVitnesses:

A. HASKINS, O. JoHNsoN.

0095:: 6! this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D50. 

